
\begin{tikzpicture}[scale=1]
    \foreach \x in {1,2, ...,5,7,8, ..., 11, 12}
    \foreach \y in {1, ..., 5}
    {
        \draw (\x, \y) +(-0.5, -.5) rectangle ++(.5,  .5);
        \draw (\x, \y) node{\x, \y};
    }    
\end{tikzpicture}
